An Investigation of Air and Its make-Up (Grades
5-8) Learn about air, its nature and how air interacts
with various objects in our environment. The first lab will
allow students to establish that air is real, even if it can not
be seen. Further experiments measure the oxygen content
of air while students learn the use of scientific controls. The
other ESS units “Balloons and Gases” (KT-1018) and
“Kitchen Physics” (KT-1037) expand upon these concepts.